Ioannis Papagiannis Matteo Migliavacca Peter R. Pietzuch Brian Shand David M. Eyers Jean Bacon PrivateFlow: decentralised information flow control in event based middleware. 2009 DEBS http://doi.acm.org/10.1145/1619258.1619306 conf/debs/2009 db/conf/debs/debs2009.html#PapagiannisMPSEB09